Advantages and Disadvantages
Lithium battery | NCM | LFP |
Energy density | High, 240WH/kg | Low, 140WH/kg |
Low temperature resistance | The lower limit is - 30 ℃ | The lower limit is - 20 ℃ |
High temperature resistance | Thermal runaway temperature is lower than 300 ℃ | Be safer and thermal runaway temperature is more than 500 ℃ |
Cycle life(High end quality in the market) | 2000 cycles and the service life is only 6 years | 3500 cycles and the service life can reach to 10 years |
Charging efficiency | High | Low |
Manufacturing cost | High | Low |
Environmental protection | Poisonous | No pollution, in line with European RoHS |
Processability | Good consistency and easy to assemble into pack | Poor consistency and the cell balance performance is poor after the pack is assembled |
The reason for the coexistence of the two in the market lies in the respective adaptability of the two due to the above differences. |
Table of Physical Performance Parameters of LFP(The following information is reproduced from Baidu Library.)
Apparent density | 0.7g/cm |
Tap density | 1.2g/cm |
Median diameter | 2-6um |
Specific surface area | <30m/g |
Coating parameters | LiFePo4:C:PVDF=90:3:7 |
Compact density of electrode | 2.1-2.4g/cm |
Schematic diagram of LFP battery
Comparison of Applications
Lithium battery | Main applications | |
Same fields | Different fields | |
NCM |
New energy vehicle - car (passenger car) Medical equipment - small and medium size |
Two-wheeler, tricycle, high-end consumer digital electronic products, intelligent robot, UAV, power tools, etc. |
LFP |
New energy vehicle - car (bus) Medical equipment - big size |
Data center, computer room system, communication base station, large emergency power supply / industrial equipment, energy storage field, etc. |